6533b851fe1ef96bd12a980b
RESEARCH PRODUCT
Miniature Cavity-Enhanced Diamond Magnetometer
Lykourgos BougasGeorgios ChatzidrososDmitry BudkerTeng WuKasper JensenArne WickenbrockNathan LeeferYannick Dumeigesubject
Physics - Instrumentation and DetectorsPhotonMaterials scienceMagnetometerGeneral Physics and AstronomyFOS: Physical sciences02 engineering and technologyengineering.material01 natural sciencesSignallaw.inventionlaw0103 physical sciencesMesoscale and Nanoscale Physics (cond-mat.mes-hall)[ PHYS.PHYS.PHYS-GEN-PH ] Physics [physics]/Physics [physics]/General Physics [physics.gen-ph][PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det]010306 general physicsAbsorption (electromagnetic radiation)[ PHYS.PHYS.PHYS-INS-DET ] Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det]Quantum PhysicsCondensed Matter - Mesoscale and Nanoscale Physicsbusiness.industryDiamondInstrumentation and Detectors (physics.ins-det)021001 nanoscience & nanotechnology[PHYS.PHYS.PHYS-GEN-PH]Physics [physics]/Physics [physics]/General Physics [physics.gen-ph]Highly sensitiveOptical cavityengineeringOptoelectronics0210 nano-technologybusinessQuantum Physics (quant-ph)Sensitivity (electronics)description
We present a highly sensitive miniaturized cavity-enhanced room-temperature magnetic-field sensor based on nitrogen-vacancy (NV) centers in diamond. The magnetic resonance signal is detected by probing absorption on the 1042\,nm spin-singlet transition. To improve the absorptive signal the diamond is placed in an optical resonator. The device has a magnetic-field sensitivity of 28 pT/$\sqrt{\rm{Hz}}$, a projected photon shot-noise-limited sensitivity of 22 pT/$\sqrt{\rm{Hz}}$ and an estimated quantum projection-noise-limited sensitivity of 0.43 pT/$\sqrt{\rm{Hz}}$ with the sensing volume of $\sim$ 390 $\mu$m $\times$ 4500 $\mu$m$^{2}$. The presented miniaturized device is the basis for an endoscopic magnetic field sensor for biomedical applications.
year | journal | country | edition | language |
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2017-10-27 |